What is Palestinian Islamic Jihad?

.ON THE EVENING of Oct 17th a burst attacked al-Ahli medical facility in Gaza Area. Thousands of civilians had been safeguarding certainly there, together with the ill. Palestinian authorities state that hundreds passed away.

Hamas, the militant team that functions Gaza, and a number of Arab countries condemned Israel. Israel’s army, pointing out drone video footage as documentation, said that the explosion was dued to a malfunctioning spacecraft fired through Palestinian Islamic Jihad (PIJ), yet another militant team. PIJ, which runs in the West Bank and also Gaza, refuted the allegation.

On October 18th, on a see to Israel, Head of state Joe Biden likewise pointed the finger at “the other team”, supporting Israel’s profile. What is actually PIJ and what threat does it present in this particular disagreement?